Ductwork patch



FIG. 1 is a perspective view of a ductwork patch showing my new design;

FIG. 2 is front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof, the opposite side being a mirror imagethereof.

The broken line showing of ductwork in FIG. 1 is for the purpose ofillustrating environmental structure and forms no part of the claimeddesign.

CLAIM The ornamental design for a ductwork patch, as shown anddescribed.